25497071 has 2 divisors, whose sum is σ = 25497072. Its totient is φ = 25497070.

The previous prime is 25497067. The next prime is 25497091. The reversal of 25497071 is 17079452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25497071 - 2² = 25497067 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25497001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12748535 + 12748536.

It is an arithmetic number, because the mean of its divisors is an integer number (12748536).

Almost surely, 2^25497071 is an apocalyptic number.

25497071 is a deficient number, since it is larger than the sum of its proper divisors (1).

25497071 is an equidigital number, since it uses as much as digits as its factorization.

25497071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 25497071 is about 5049.4624466373. The cubic root of 25497071 is about 294.3269959123.

The spelling of 25497071 in words is "twenty-five million, four hundred ninety-seven thousand, seventy-one".